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  1. Dukedog

    200hp efi overheating

    JAN: have you used tha same head bolts? did you do tha 90* thing with 'em?.. if you don't use new bolts you might just torque ta 35 lbs and go with it...
  2. Dukedog

    200hp efi overheating

    he did not!
  3. Dukedog

    200hp efi overheating

    it goes thru tha front side of tha can thru an exhaust tube thats suppose ta be sealed both top and bottom.. its completely separate from exhaust... without it (like our hot rods) will sometimes completely destroy (melt) tha water pump.... tha tube also prevents tha discoloring of tha down...
  4. Dukedog

    200hp efi overheating

    " his thought was that exhaust gas was getting into the water pump " this is almost impossible.. water pump is in a separated part of tha motor..
  5. Dukedog

    200hp efi overheating

    when you replaced tha water pump did you install a "kit" or jus tha impeller?.. need ta replace all of it...
  6. Dukedog

    200hp efi overheating

    if you cut and install yourself tha length will be estimate.. it needs about 1/4" gap at both ends when installed.... these don't need ta be exact measurements...... are you getting any type of overheat alarm??? if not, i wouldn't think twice about it....
  7. Dukedog

    200hp efi overheating

    those are usually called "diverters".. we would put 'em our hot rods years ago before merc ever thought 'bout 'em.. never seen 'em on any Parts charts except later model Hi Perf. 2 stroke stuff ie: 260, 280 etc... they should not be a problem.. earlier production mercs have ran for years without...
  8. Dukedog

    May Day help

    pump tha "bulb" when it starts ta act stupid.. if that works then its bad.. next push tha key "in" (activates tha enrichner circuit) and hold for a few seconds when it acts up.. if that makes tha motor come back ta life ya have a bad fuel pump
  9. Dukedog

    Merc 200hp timming questions.

    go here: https://www.biggerhammer.net/mercury/ Timing a 2.5 Jay Smith gives the following instructions for setting proper timing on a 2.5 Jay makes a great dial indicator for performing this procedure - it is available at http://www.jaysmithracing.com his is for a 2.5 motor but they...
  10. Dukedog

    1984 Mercury Black Max 150 hard start and wont idle.

    yeah, its gone...
  11. Dukedog

    1984 Mercury Black Max 150 hard start and wont idle.

    don't know your "startin'" routine but most carb mercs have their own quirks on what it wants... trim motor all tha way down.. raise fast idle up justa tad.. hold key pushed and crank till snorts and/or try's ta start.. release key and trim motor up ta level.. raise fast idle up a tad again and...
  12. Dukedog

    1984 Mercury Black Max 150 hard start and wont idle.

    think you might need ta find an OEM manual and go thru it.. yours has several answers for tha problems it has.. we can all guess but without actually being able ta "reach out and touch it" but with that many concerns it is all just that, guesses... think this is tha manual ya need ta track...
  13. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    (y)
  14. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    motor mounted neutral safety switch hadn't come out yet.. was a few years later.. but there should be a neutral safety switch inside tha control box gear case?.. unless its been changed which is a good possibility is has whats called a pre-load gear case.. its a weaker design than a later...
  15. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    tha box he's referin' to is mounted on top of tha air box stuff. will have a red, white and black best i remember.. they terminate on a switch box.. its called an "idle stabilizer".. looks like it is there in one of your pics? it has a piece of tape on it aligned with your makeshift pointer...
  16. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    jus something ya might wanna check is tha bore's.. they should be "chrome plated".. if they are steel then its had replacement sleeves installed.. if it has that done then tha rings will be different than "stock" rings.. chrome bores use steel rings and steel bores use chrome rings.. there are...
  17. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    you have a 1st generation motor.. its a 2.4 175.. pre '83.. its basically a 200 block with tha vertical front half instead of tha horizontal front half used on tha 200... nowhere near a "hot rod".. but preforms just about as good as a 200.. in fact some of tha 175's would run right with a true...
  18. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    finally found your serial number: Your Mercury serial number 6033659 identifies your engine as a 1982 Mercury 150 HP V6 (2.0L) outboard motor. [1, 2]
  19. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    Ai has no clue about tha 1st, 2nd and 2.5 style blocks starting and stopping!!!.. it says that first gen started in '76 (true) but also says it ended in '91 (not true)..... also says only 2 generations when there are actually 3.... so much for Ai..........
  20. Dukedog

    1982 200hp high-performance "Franken-motor" hybrid build serial number 6033659 block casting has the J92W stamp

    your motor IS NOT a 2.5 in any way........... can you send a pic of tha heads.. that will tell me if its gen 1 or gen 2 block.. gen 1 ended in '83.. gen 2 ended in '91... .bout tha only way to be sure of 2.4 or 2.0 is pull a head.. it should have a little circle stampe on tha upper part of tha...
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